一、前言 用GPC方法测定聚丙烯腈分子量分布文献不多,所有文献都是以聚苯乙烯凝胶作柱子填充物,以DMF(内加LiBr)作洗涤剂,断定使用窄分布聚苯乙烯标准物标定运用流体力学通用校正方法是不行的,分级是在凝胶渗透色谱仪上进行,使用检测手段是高灵敏度的示差折光计。我们认为对高极性聚丙烯腈使用多孔性SiO_2微球作柱填料是可行的,在这种 I. Preface Determination of molecular weight distribution of polyacrylonitrile by GPC method is not much literature, all documents are based on polystyrene gel as a column filler to DMF (plus LiBr) as a detergent, concluded that the use of narrow distribution of polystyrene standards Material calibration using universal calibration of hydrodynamic methods is not enough, the grading is carried out on a gel permeation chromatograph using the detection means is a high sensitivity refractive refractometer. We think it is feasible to use porous SiO 2 microspheres as the column packing for high polarity polyacrylonitrile. In this